Cummins Tier 4 Operator App

Cummins is pleased to deliver the first educational smartphone application designed to help you understand and get the most out of Cummins Tier 4 Interim/E.U. Stage IIIB and Tier 4 Final/E.U. Stage IV engines and aftertreatment systems.

The app has been designed as a walkthrough operation guide for both your engine and aftertreatment system. The guide covers both Tier 4 Interim/E.U. Stage IIIB and Tier 4 Final/E.U. Stage IV engines, including how to determine which engine you have, Diesel Exhaust Fluid (DEF) information, DEF dash lamps, Diesel Particulate Filters (DPF), DPF dash lamps and the inhibit switch you see on your dash. Information on service intervals and engine and aftertreatment spec sheets can also be found in the app.

An additional feature of the app is a direct link to Cummins Care. Do you have a question regarding your Cummins engine or need help finding a repair location? Selecting the “Need More Additional Help” link will take you to the 1-800-DIESELS™ number, or a link to the online form to submit your question.

The Cummins Tier 4 Operator Guide is available for both Droid and Apple platforms for both North America and the European Union. You can find the right version for you at the links below. Sample screenshots are also included below.

Click the appropriate Droid or iPhone link in the table below to download the Cummins Tier 4 Operator App for engines within the 49-751 hp emissions categories.

North America Operator App

EPA Tier 4



European Union Operator App


EU Stage  IIIB & IV



The European App is available for download in English, German, French, Italian, Spanish, Swedish and Polish.